Virus invirable !!!

bonjour a tous
voila j ai un gros probleme avec mon pc, j ai plusieurs virus que norton n arrive pas a enlever notament "Hacktool.rootkit" "clickspring" et "istbar"ainsi que d autre virus qui m ouvre des pages internet puis me deconecte ! et quand j arrive a les supprimer ils reviennent j en peux plus...
voici mon log :

Logfile of HijackThis v1.99.1
Scan saved at 22:06:47, on 29/08/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\WINDOWS\System32\LVCOMSX.EXE
C:\WINDOWS\system32\spoolsv.exe
D:\Web Cam Logitech\LogiTray.exe
D:\Msn+\MsgPlus.exe
C:\WINDOWS\System32\smss.pif
C:\WINDOWS\System32\wiit.exe
C:\WINDOWS\System32\steam.exe
C:\Program Files\hett\rcso.exe
C:\WINDOWS\System32\n?pdb.exe
C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
D:\Web Cam Logitech\FxSvr2.exe
D:\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\netinfo.exe
D:\Norton AntiVirus\IWP\NPFMntor.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\Program Files\Messenger\msmsgs.exe
D:\Emule\emule.exe
C:\WINDOWS\system32\cmd.exe
C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
C:\WINDOWS\System32\boot32.pif
D:\Norton AntiVirus\Logiciel antivirus\Ad-Aware\Ad-Aware SE Professional\Ad-Aware.exe
C:\Program Files\Internet Explorer\iexplore.exe
D:\Norton AntiVirus\Logiciel antivirus\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.tiscali.fr/
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.tiscali.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {24871361-F2D6-DA08-D71A-A91825D8969C} - C:\WINDOWS\System32\icq.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - D:\NORTON~1\LOGICI~1\Spybot\SPYBOT~1\SDHelper.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - D:\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - D:\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Fichiers communs\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [LVCOMSX] C:\WINDOWS\System32\LVCOMSX.EXE
O4 - HKLM\..\Run: [LogitechVideoRepair] D:\Web Cam Logitech\ISStart.exe
O4 - HKLM\..\Run: [LogitechVideoTray] D:\Web Cam Logitech\LogiTray.exe
O4 - HKLM\..\Run: [MessengerPlus3] "D:\Msn+\MsgPlus.exe"
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\NeroCheck.exe
O4 - HKLM\..\Run: [Microsoftf smss Control] smss.pif
O4 - HKLM\..\Run: [Microsoft Update 32] wiit.exe
O4 - HKLM\..\Run: [steam] steam.exe
O4 - HKLM\..\Run: [MS-DOS Boot Service] boot32.pif
O4 - HKLM\..\RunServices: [Microsoftf smss Control] smss.pif
O4 - HKLM\..\RunServices: [Microsoft Update 32] wiit.exe
O4 - HKLM\..\RunServices: [steam] steam.exe
O4 - HKLM\..\RunServices: [MS-DOS Boot Service] boot32.pif
O4 - HKCU\..\Run: [LogitechSoftwareUpdate] "D:\Web Cam Logitech\ManifestEngine.exe" boot
O4 - HKCU\..\Run: [Wtsd] C:\Program Files\hett\rcso.exe
O4 - HKCU\..\Run: [Phl] C:\WINDOWS\System32\n?pdb.exe
O4 - HKCU\..\Run: [MS-DOS Boot Service] boot32.pif
O4 - HKCU\..\RunServices: [MS-DOS Boot Service] boot32.pif
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://C:\Program Files\Google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://D:\MICROS~1\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://C:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Télécharger en utilisant Download &Express - D:\Donwload Express\Download Express\Add_Url.htm
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://C:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - D:\MICROS~1\OFFICE11\REFIEBAR.DLL
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1121876533453
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.cab
O16 - DPF: {E87F6C8E-16C0-11D3-BEF7-009027438003} (Persits Software XUpload) - http://www.bellapix.com/XUpload.ocx
O17 - HKLM\System\CCS\Services\Tcpip\..\{B5DF71E6-2807-49B0-A05D-A41084611252}: NameServer = 213.36.80.1 213.36.80.1
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: Externtelecom - Unknown owner - C:\WINDOWS\extel.exe (file missing)
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - D:\Norton AntiVirus\navapsvc.exe
O23 - Service: netinfo - Unknown owner - C:\WINDOWS\netinfo.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - D:\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: NTFSprotect (ntfsdiscman) - Unknown owner - C:\WINDOWS\ntfsprotect.exe (file missing)
O23 - Service: SAVScan - Symantec Corporation - D:\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\CCPD-LC\symlcsvc.exe

merci de votre aide